Glass-pot-handling apparatus.



NO- 834,894. PATENTED NOV. 6, 1906.

W. M. BRAVO & W. H. FRINK. GLASS POT HANDLING APPARATUS.

I APPLICATION FILED NOV. 20. 1905.

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ya/mum m UNITED STATES PATENT OFFIOE.

WILL AM M. DRAVO AND WILLIAM I1.FR1NK,OF NORTH BELLE VERNON, PENNsrLvAmA, ASSIGNORS TO WINDOW GLASS. MACHINE COMPANY, OF PI'ITSBURG, PENNSYLVANIA. A CORPORATION OF .NEW JERSEY.

1 GLASS-POT-HANDLING APPARATUS.

Specification of Letters Patent.

Patented Nov. 6, 1906.

Application filed November 20, 1905 Serial No. 288.153-

l'o-a/ll whom it may concern:

Be it known that we, WILLIAM M. DRAvO and WILLIAM H. FRINK, both of North Belle Vernon, Fayette county, Pennsylvania, have invented a new and useful Glass-Pot-Handling Apparatus, of which the following is a full clear, and exact description, reference being had to the accom anying drawings, forming part of this speci cation, in which,

Figure '1 is a partial side elevation of a drawing kiln or pot constructed in accordance with our invention. Fig.2 is a to plan view of the same, and Fig. 3 is a detal view of the spring-latch or clutch connection which we employ.

Our invention relates to glass-pot furnaces or dra wing-kilns, particularly those employed for the drawing of glass articles, such as cylinders, &c., wherein a double pot is employed, which is turned over between the .drawing'operations'.

The 'ob'ect of our'invention is to do away with the raising and lowering of the pots which has heretofore been necessary and to turn the'pot in stationary bearings. We obtain this object by moving the top stone of the furnace vertically, either by hinging and tilting it or by moving it upward and downward in substantially parallel lines. We

also preferably provide apparatus by which.

the lifting of the top stone and the turning of the pot can be carried out in a certain time relation to each other.

In the drawings, 2 re resentsthe walls of the pot-furnace, and 3 t 1e top stone or cover,

which is preferably'made of cast-iron and is hinged at one end, as shown at 4. The cover is shown as provided with a large central hol through which the articleis drawn.

The pot 5, which is shown in dotted lines in Fig. 1, is trunnioned in stationary bearings 6 6 1n the sides of the furnace structure, and one of the trunnions is extended and provided with a sprocket-wheel 7.

The free end of the top stone is connected by pivoted 1 nks 8 with levers 9, secured to and. pro iecting from a cross-shaft 10. On the end oft 1e shaft 10 is loosely mounted a sprocketwheel 11, over which and the sprocket-wheel 7 extends chain 12.

The inner face of the sprocket-wheel 11 is provided with an annular series of teeth, which may be engaged by a spring-pressed dog 13, operated by the-hand-latch device 14, connected to the hand-lever 1'5. Thehandlever 15 is secured to the shaft 10, so that whenever such lever is operated the top stone willberaised or lowered according to the direction of movement.

In the use of the ap aratus when it is desired to reverse the position of the ot the operator presses on the spring-late i to withdraw it from the sprocket-wheel and then moves the lever to swing the stone through the link connections.

After the top stone or cover has reached its highest point the operator releases the spring-latch and reverses the movement of the lever, allowing it to return.-

On this reverse movement the pot will be turned and the top stone will assume its original position.

The advantages of our invention result from the moving of the top stone in connection with the turning of the ot. This does away with the raising and owering of the pot, which has heretofore been necessary with stationary top stones. kilns may be arranged in series .Wltll a continuous revolvingshaft common to all of them. The shaft may be driven by an elec- The furnaces or,

tric motor or other suitable means and provided'with clutches for operating the covers.

The mechanism for raising the cover and turning the pot may be'varied widely, and their relative movements may be obtained in different ways without departing from our in ventionw We claim 1. A pot-furnace having a swinging pot, and a vertically-movable top stone normally in the path of the pot; substantially as described.

2. A pot-furnace having a reversible pot revolubly mounted in stationary bearings,

.and a tilting top stone normally within the path of the pot substantially as described.

3. A furnace having a turning pot, and a tilting top stone normally within the path of the pot, and mechanism for simultaneously moving the top stone and turning the pot; substantially as described 4. -A furnace having a movable top stone endaiftilting' pot, connections for tilting the tween said shaft and the reversible pot; sub- 10 pom-connections for moving the top stone, stsntiallyas described.

I and means ir'0r0)eratin said elements simul- 1n testimon whereof W0 have hereunto taneously or separately as d u-sired substanset our hands. tielly as described. v

5. A furnace having a reversible pot mounted in stationary bearings, a tilting to stone, 8, shafthaving link connection Wit 1 the top stone and clutch connection be- I \VILLIAM M. DRAVO. WILLIAM H. FRIN K. Witnesses HELEN HAGERTI,

M. E. BARLOW. 

